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Foresters are interested in the growing conditions for pine trees in different parts of the forest they are studying. Random samples of tree diameters from the north, east, south and west regions of the forest are taken. See the data below. Is there evidence that the mean diameters of pine trees are not all equal? Test at the a = 0.1 level of significance. Include stern plots in your solution so you can look at the spread of the data. Include stemplots in your solution so you can look at the spread of the data. Diameter of Pine trees in centimeters North West 28 55 15 14 41 27 44 36 15 25 18 18 30 33 39 15 28 35 28 26 South East 44 51 37 44 52 49 25 20 26 48 21 35 39 50 44 25 50 47 36 19 28 46